JPS59226629A - Device monitoring emergency preliminary generating facility - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Ru.

Generally, emergency standby light 1R equipment is installed in equipment such as radio communication equipment that requires power to be secured even in the unlikely event of a power outage of the receiving power source. This power generation equipment must not be operated in parallel with the power receiving system, and must be maintained so that it can immediately start operating normally upon detection of a power outage in the receiving power source. However, since this power generation equipment is operated very rarely, it is difficult to detect abnormalities, and even if the presence or absence of abnormalities is checked by trial runs once or twice a month, this check requires little skill. It requires careful examination, and even an experienced person may overlook abnormalities.

In this way, the conventional checks on power generation equipment require the deployment of special technicians, and there is also the risk that even special technicians may overlook a slight abnormality, which may develop into a major abnormality. , which violated the uncertainty of equipment maintenance.

The present invention has been developed in view of the above-mentioned circumstances, and it is an object of the present invention to provide a monitoring device with improved reliability by making it possible to check even minute changes in the state of power generation equipment without requiring any skill!
purpose.

The monitoring device according to the present invention focuses on the fact that when an abnormality occurs in the device, the specifications of the equipment differ from 111 when it is in a normal state. It is characterized by the ability to check for abnormalities by obtaining a status signal in a stopped state and comparing it with the specifications of the relevant item.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a block diagram of a monitoring device of the present invention.

The prime mover 2, which is supplied with fuel from the fuel storage 11f1, is
Automatically starts in the event of a power outage or does not start during a trial run, and the generator is driven at a constant speed. The generator 3 supplies the necessary power to various equipment at the same frequency as the receiving source, and is equipped with a control device 4 and five auxiliary devices such as circuit breakers for lightning generation, output control, and painting system adjustment. do. Such emergency standby firing equipment is equipped with a sensor group that detects the status of each part, and the detection signals from this sensor group are collected by the YvL viewing device 6 and compared with the standard 11σ of each monitoring item station. Determine and display the presence or absence of abnormalities and display warnings for abnormal items? do. The items in each book are not limited to the firing equipment itself, but also the ambient temperature conditions and ventilation equipment of the equipment itself! This includes Sae's standby conditions, etc.

Monitoring items for the power generation equipment include the t'llA 1m oil level in the oil pan for the prime mover I, the battery's pressure 1, specific pressure, liquid temperature, exhaust temperature, fuel dispense tank level, radiator cooling water level, There are exhaust temperature, etc., and for the generator 3, there are 1 rotation speed, ``heavy pressure'', ``boka'', etc.

The monitoring device 6 has an n1 sensor group 6I having the configuration shown in FIG.
Detection signal calculation unit for each item from 6. and calculation section 6. Then calculate i*'v for each item and find the result of the calculation? Sequential line printer 6 by sequencer 6
4e6. and alarm 6 @ for abnormal items.
Output to. The determination method V for typical items among the monitoring items will be explained below.

(b) Fuel oil monitoring fuel storage! [For fuel supply from 1 to the prime mover 2, the fuel transfer pump is automatically operated by a float switch in the fuel dispensing tank, and as shown in Fig. Control is generally performed to stop the pump when the pump reaches the H+ level, but this device operates the fuel transfer pump by stopping the prime mover and stops the pump when the oil level reaches the H+ level. maintain.

In order to monitor fuel oil for such automatic fuel amount control, if the fuel oil drops below the H level in the prime mover stop state E, it is determined that there is an abnormality and the pipe axis is 0.
display.

Also, determine the operating time of the fuel transfer pump once.
The operating time of this pump is counted for each operation, and if the operating time of the pump exceeds a specified value due to a failure in the fuel piping, etc., it is determined that the pump is in a state of emergency.

1) Motor lubricating oil temperature monitoring The lubricating oil temperature is greatly affected by the operating condition of the motor and the room temperature. Therefore, to monitor the lubricating oil temperature, we compare the lubricating oil detected temperature TLD from the sensor with the reference temperature 1fTL, which is determined as a function of the lightning strike, the Imaichi output of machine 3, and the room temperature, and check for abnormalities. judge.

Calculate it on the monitoring device side from the formula of reference temperature TL & work time.

TL=TLO+(TR-TRO)XαLTwhere, T
r=o+room temperature Lubricating oil temperature at TRO (-C) Room temperature at TRI calculation ('C) TRo; Room temperature at factory test (℃) Generator output at KWi calculation KWIQQ electric generator rated electric machine rated output quasi-temperature TL If the following equation holds true from the actual lubricating oil temperature TLD at the time of calculation and the determination reference coefficient kLt, and the lubricating oil temperature continues for a predetermined period of time (for example, 10 minutes), it is determined that the lubricating oil temperature is abnormal.

l TLD -TL I > J4. - TL1/1 battery monitoring battery drives the starter motor when starting the prime mover,
After starting, the appropriate voltage as the power source for the ignition system of the prime mover, 1
! The condition is that the current can be supplied, so battery monitoring involves monitoring the cell motor (flR) at startup, monitoring battery voltage, and monitoring battery fluid specific gravity and fluid level when the machine is stopped. . To monitor the starter motor W current, as shown in Figure 4 +Al, monitor the change in I current after giving a start command, and keep N = 0% of the current value until the number of rotations per prime mover N reaches 60%.

The maximum value r max at N=20% is the set value TH and IL
(7) I+! If the value falls within this range, it is determined to be normal, and if it exceeds this range, it is determined to be defective or abnormal. To monitor the battery pressure, as shown in FIG. 4 tBl, the voltage after the start command is given is monitored until the number of revolutions N=60%, and if the voltage falls below the set value VL, it is determined that there is an abnormality in the hole. Battery specific gravity monitoring includes liquid temperature that correlates with specific gravity, and specific gravity detection value xs and liquid temperature xt
Perform the following operation from 820 = 8o+ + (t,
-20) However, 8 o;K! Xf32+ KBXg
+ K4t, = KsXt, + If 820 on K continues to be below the set value for a predetermined period of time (for example, 60 seconds), it is determined that there is an abnormality. In battery level monitoring, if the detected level remains below the lower limit level for a predetermined period of time, it is determined that there is an abnormality.

ni) Hara I! II Machine Exhaust Temperature Electrical Monitoring The prime mover exhaust temperature is monitored by comparing the operating temperature at the site with the exhaust temperature and intake air temperature V (room temperature) under standard conditions (factory test). The exhaust temperature sensor is installed in the exhaust pipe, but one sensor is installed in each cylinder of the prime mover, or one sensor is installed in the exhaust manifold pipe (held in two rows on the left and right) from each cylinder. Detection by

The theoretical value TE of the exhaust gas temperature including the room temperature difference is as follows.

0 However, TR + room temperature TEo at the site + exhaust temperature TRo at the time of the factory test; room temperature at the time of the factory test KW e KW 100 is based on this theoretical value T as described above.
Exhaust temperature theory device for each of the left and right exhaust manifold pipes according to E,
Detection device S, TER8 from a temperature sensor installed on the left and right exhaust manifolds for this reference A11.
If the difference between each of them falls within the following range for a predetermined period of time (for example, 10 minutes) W[, then it is determined that there is a pkK abnormality.

l TKL8- position l > K, 'rEL + K
.

1 1 TBR8-'rEHl > K4 TER+Kl
+Also, when the left and right exhaust pipe temperature imbalance and the sum of the hair temperature differences fall within the following ranges and continue for a predetermined period of time, it is determined that the patient is suffering from itching.

(TgLs - position)X (TER8 - TER)≦OI
Set S −TgLl + 1TER8−TERI >K
a(Tgr, +TgR)+Ky As described above, according to the present invention, the detection signal of the sensor provided in each part of the equipment for monitoring the presence or absence of abnormality in the power supply equipment, the various specifications that the equipment has in a normal state, and the stopped state of the equipment In order to compare the operating status and determine whether there is a difference and display an alarm 1, it is possible to automate the equipment status monitoring and 111! It also makes it possible to check changes in the condition of the eel, and has an excellent effect on improving the reliability of the equipment without requiring a skilled person.

[Brief explanation of the drawing]

2. FIG. 1 is a schematic configuration diagram of the present invention, and FIG. 2 is a diagram for explaining an example of abnormality determination in the viewing device of the present invention. DESCRIPTION OF SYMBOLS 1... Fuel storage, 2... Prime mover, 3... All 1 machine, 4... Control device, 5... Auxiliary equipment device, 6... Monitoring device, 6I... Sensor group, 6! . . . calculation section, 6.・
...Sequencer, 64...Linepu II interface, 6.・
...Alarm. 3 L---1 Figure 3-B Terama 163- ni: Toto) Suida

Claims (1)

[Claims] In the emergency standby power generation equipment that is operated in the event of a power outage at the receiving t'H source, sensors are installed to detect the status of each part of the power generation equipment, and the information from each of the above sensors is installed in the operating state and stopped state of the generating equipment. An emergency reserve characterized by the provision of a monitoring means for displaying the status of each part of the power generation equipment and determining whether or not it is in a normal state by comparing the status signal of each part with a calculation means that calculates from the specifications of the normal state of each part. Power generation and equipment monitoring equipment.